[PATCH net-next v04 5/8] hinic3: TX & RX Queue coalesce interfaces

[Fan Gong]

Add TX RX queue coalesce interfaces initialization.
It configures the parameters of tx & tx msix coalesce.

Co-developed-by: Xin Guo <guoxin09@xxxxxxxxxx>
Signed-off-by: Xin Guo <guoxin09@xxxxxxxxxx>
Co-developed-by: Zhu Yikai <zhuyikai1@xxxxxxxxxxxxxx>
Signed-off-by: Zhu Yikai <zhuyikai1@xxxxxxxxxxxxxx>
Signed-off-by: Fan Gong <gongfan1@xxxxxxxxxx>
---
 .../net/ethernet/huawei/hinic3/hinic3_main.c  | 65 +++++++++++++++++--
 .../ethernet/huawei/hinic3/hinic3_nic_dev.h   | 10 +++
 2 files changed, 70 insertions(+), 5 deletions(-)

diff --git a/drivers/net/ethernet/huawei/hinic3/hinic3_main.c b/drivers/net/ethernet/huawei/hinic3/hinic3_main.c
index 497f2a36f35d..8d1c7a388762 100644
--- a/drivers/net/ethernet/huawei/hinic3/hinic3_main.c
+++ b/drivers/net/ethernet/huawei/hinic3/hinic3_main.c
@@ -17,12 +17,57 @@
 
 #define HINIC3_NIC_DRV_DESC  "Intelligent Network Interface Card Driver"
 
-#define HINIC3_RX_BUF_LEN            2048
-#define HINIC3_LRO_REPLENISH_THLD    256
-#define HINIC3_NIC_DEV_WQ_NAME       "hinic3_nic_dev_wq"
+#define HINIC3_RX_BUF_LEN          2048
+#define HINIC3_LRO_REPLENISH_THLD  256
+#define HINIC3_NIC_DEV_WQ_NAME     "hinic3_nic_dev_wq"
 
-#define HINIC3_SQ_DEPTH              1024
-#define HINIC3_RQ_DEPTH              1024
+#define HINIC3_SQ_DEPTH            1024
+#define HINIC3_RQ_DEPTH            1024
+
+#define HINIC3_DEFAULT_TXRX_MSIX_PENDING_LIMIT      2
+#define HINIC3_DEFAULT_TXRX_MSIX_COALESC_TIMER_CFG  25
+#define HINIC3_DEFAULT_TXRX_MSIX_RESEND_TIMER_CFG   7
+
+static void init_intr_coal_param(struct net_device *netdev)
+{
+	struct hinic3_nic_dev *nic_dev = netdev_priv(netdev);
+	struct hinic3_intr_coal_info *info;
+	u16 i;
+
+	for (i = 0; i < nic_dev->max_qps; i++) {
+		info = &nic_dev->intr_coalesce[i];
+		info->pending_limit = HINIC3_DEFAULT_TXRX_MSIX_PENDING_LIMIT;
+		info->coalesce_timer_cfg = HINIC3_DEFAULT_TXRX_MSIX_COALESC_TIMER_CFG;
+		info->resend_timer_cfg = HINIC3_DEFAULT_TXRX_MSIX_RESEND_TIMER_CFG;
+	}
+}
+
+static int hinic3_init_intr_coalesce(struct net_device *netdev)
+{
+	struct hinic3_nic_dev *nic_dev = netdev_priv(netdev);
+	struct hinic3_hwdev *hwdev = nic_dev->hwdev;
+	u64 size;
+
+	size = sizeof(*nic_dev->intr_coalesce) * nic_dev->max_qps;
+	if (!size) {
+		dev_err(hwdev->dev, "Cannot allocate zero size intr coalesce\n");
+		return -EINVAL;
+	}
+	nic_dev->intr_coalesce = kzalloc(size, GFP_KERNEL);
+	if (!nic_dev->intr_coalesce)
+		return -ENOMEM;
+
+	init_intr_coal_param(netdev);
+
+	return 0;
+}
+
+static void hinic3_free_intr_coalesce(struct net_device *netdev)
+{
+	struct hinic3_nic_dev *nic_dev = netdev_priv(netdev);
+
+	kfree(nic_dev->intr_coalesce);
+}
 
 static int hinic3_alloc_txrxqs(struct net_device *netdev)
 {
@@ -42,8 +87,17 @@ static int hinic3_alloc_txrxqs(struct net_device *netdev)
 		goto err_free_txqs;
 	}
 
+	err = hinic3_init_intr_coalesce(netdev);
+	if (err) {
+		dev_err(hwdev->dev, "Failed to init_intr_coalesce\n");
+		goto err_free_rxqs;
+	}
+
 	return 0;
 
+err_free_rxqs:
+	hinic3_free_rxqs(netdev);
+
 err_free_txqs:
 	hinic3_free_txqs(netdev);
 
@@ -52,6 +106,7 @@ static int hinic3_alloc_txrxqs(struct net_device *netdev)
 
 static void hinic3_free_txrxqs(struct net_device *netdev)
 {
+	hinic3_free_intr_coalesce(netdev);
 	hinic3_free_rxqs(netdev);
 	hinic3_free_txqs(netdev);
 }
diff --git a/drivers/net/ethernet/huawei/hinic3/hinic3_nic_dev.h b/drivers/net/ethernet/huawei/hinic3/hinic3_nic_dev.h
index c994fc9b6ee0..9577cc673257 100644
--- a/drivers/net/ethernet/huawei/hinic3/hinic3_nic_dev.h
+++ b/drivers/net/ethernet/huawei/hinic3/hinic3_nic_dev.h
@@ -51,6 +51,12 @@ struct hinic3_dyna_txrxq_params {
 	struct hinic3_irq_cfg      *irq_cfg;
 };
 
+struct hinic3_intr_coal_info {
+	u8 pending_limit;
+	u8 coalesce_timer_cfg;
+	u8 resend_timer_cfg;
+};
+
 struct hinic3_nic_dev {
 	struct pci_dev                  *pdev;
 	struct net_device               *netdev;
@@ -70,10 +76,14 @@ struct hinic3_nic_dev {
 	u16                             num_qp_irq;
 	struct msix_entry               *qps_msix_entries;
 
+	struct hinic3_intr_coal_info    *intr_coalesce;
+
 	bool                            link_status_up;
 };
 
 void hinic3_set_netdev_ops(struct net_device *netdev);
+int hinic3_qps_irq_init(struct net_device *netdev);
+void hinic3_qps_irq_uninit(struct net_device *netdev);
 
 /* Temporary prototypes. Functions become static in later submission. */
 void qp_add_napi(struct hinic3_irq_cfg *irq_cfg);
-- 
2.43.0